CVE-2026-71463

Description

Notification template Jinja AST whitelist only inspects static Getattr nodes. Dynamic subscripts (job['job'+'_env']) and {% if job.id > 100 %} conditional gating bypass both the AST check and the test-render (stub has small job.id). At runtime, the gated branch executes and exceptions write full tracebacks into notification body, which is POSTed to attacker-controlled webhook URL. Leaks install paths, Python version, source line numbers.

CVSS Vector

References

• https://access.redhat.com/errata/RHSA-2026:71113
• https://access.redhat.com/errata/RHSA-2026:71114
• https://access.redhat.com/errata/RHSA-2026:71177
• https://access.redhat.com/errata/RHSA-2026:71179
• https://access.redhat.com/security/cve/CVE-2026-71463
• https://bugzilla.redhat.com/show_bug.cgi?id=2512372